CN112923777A - Turbulent flow piece, heat exchange assembly and heat exchange device - Google Patents
Turbulent flow piece, heat exchange assembly and heat exchange device Download PDFInfo
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- CN112923777A CN112923777A CN202110180574.1A CN202110180574A CN112923777A CN 112923777 A CN112923777 A CN 112923777A CN 202110180574 A CN202110180574 A CN 202110180574A CN 112923777 A CN112923777 A CN 112923777A
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- spoiler
- heat exchange
- exchange tube
- spring
- region
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a flow disturbing member, a heat exchange assembly and a heat exchange device. The spoiler is a spiral plate and is arranged in the heat exchange tube along the axial direction of the heat exchange tube. At least one side plate edge of the spoiler is provided with a plurality of puncturing parts and/or a plurality of through holes. The spoiler is the heliciform board, plays better vortex effect to the rivers in the heat exchange tube, makes the temperature everywhere in the heat exchange tube as far as possible even, and the temperature difference everywhere in the heat exchange tube is very little, avoids appearing the heat exchange tube wall temperature and is higher than the saturation temperature of water to reach the production that reduces the bubble, eliminate the vaporization noise. In addition, the air bubbles in the water flow at the pipe wall can be punctured when the puncturing part contacts with the air bubbles, so that the individual density of the air bubble group can be reduced to reduce the vaporization noise; the plurality of through holes arranged on the edge of the spoiler can further enhance the turbulence effect, so that the temperature at each position in the heat exchange tube is as uniform as possible, thereby reducing the generation of bubbles and eliminating vaporization noise.
Description
Technical Field
The invention relates to the technical field of hot water equipment, in particular to a turbulence piece, a heat exchange assembly and a heat exchange device.
Background
With the improvement of quality of life, gas water heating devices, such as gas water heaters and gas water heaters, are gradually popularized in daily life of each household. Traditionally, the main sources of noise for gas-fired water heating equipment have been combustion noise, vaporization noise, fan noise, and waterway noise. The vaporization noise accounts for a large proportion, the vaporization noise can reach about 73db in laboratory tests, the vaporization noise is far beyond 65db of the national standard, and the experience degree of consumers is very poor, so that manufacturers strive to reduce the vaporization noise and improve the experience feeling of users.
In order to reduce the noise of gas water heating equipment, the current industry generally winds the inner wall circumference of a copper pipe to be provided with a turbulence spring, or sets the copper pipe into a flat pipe, and arranges star-shaped turbulence plates in the flat pipe. However, the noise of the gas water heating equipment is still large during operation, and the requirement cannot be met.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a spoiler, which can effectively reduce noise.
The second technical problem to be solved by the present invention is to provide a heat exchange assembly, which can effectively reduce noise.
The third technical problem to be solved by the present invention is to provide a heat exchanger, which can effectively reduce noise.
The first technical problem is solved by the following technical scheme:
a spoiler, comprising: the spoiler is a spiral plate and is arranged in the heat exchange tube along the axial direction of the heat exchange tube; a plurality of puncturing parts and/or a plurality of through holes are/is arranged on the edge of at least one side plate of the spoiler; the clearance size between the plate edge of spoiler and the wall of heat exchange tube is S, the internal diameter of heat exchange tube is C, and S satisfies the relation with C: s < 0.25C.
Compared with the background technology, the spoiler of the invention has the following beneficial effects: after installing in the heat exchange tube, because the spoiler is used for setting up in the heat exchange tube along the axial direction of heat exchange tube, and the spoiler is the heliciform board, play better vortex effect to the rivers in the heat exchange tube, also flow along the spiral direction when the rivers in the heat exchange tube process spoiler, realize heat exchange tube pipe wall rivers and the regional rivers rapid mixing around the hollow shaft center, reduce the rivers temperature difference of pipe wall rivers temperature and the regional rivers temperature difference around the hollow shaft center, avoid local temperature in the heat exchange tube to rise too fast, make the temperature everywhere in the heat exchange tube as far as possible even, the temperature difference is very little everywhere in the heat exchange tube, avoid appearing the heat exchange tube pipe wall temperature and be higher than the saturation temperature of water, thereby reach the production that reduces the. In addition, when a plurality of puncturing parts are additionally arranged on the edge of the spoiler, and S and C meet the relation that S is less than 0.25C, even if a few bubbles are formed on the tube wall of the heat exchange tube, the bubbles can be punctured when the puncturing parts contact the bubbles in water flow at the tube wall before the bubbles are not fully expanded, so that the aim of reducing the individual density of a bubble group and reducing the vaporization noise is fulfilled; when being equipped with a plurality of through-hole on the spoiler board reason, can further strengthen the vortex effect for temperature is as even as possible everywhere in the heat exchange tube, avoids appearing the heat exchange tube wall temperature and is higher than the saturation temperature of water, thereby reaches the production that reduces the bubble, eliminates the vaporization noise.
In one embodiment, the piercing part is a sawtooth, a bulge or a sharp point arranged on the plate edge of the spoiler.
In one embodiment, a plurality of puncture parts and/or a plurality of through holes are arranged on two side plate edges of the spoiler.
In one embodiment, a plurality of the piercing parts and/or a plurality of the through holes are sequentially arranged from one end of the spoiler to the other end of the spoiler.
In one embodiment, the spoiler is used for being in clearance fit with the inner wall of the heat exchange tube; or the spoiler is used for being clamped and fixed on the inner wall of the heat exchange tube; or the spoiler is arranged on the inner wall of the heat exchange tube in a hanging manner, and the end part of the spoiler is fixedly arranged on the U-shaped insertion tube at the end part of the heat exchange tube; or the spoiler is fixedly arranged in the heat exchange tube through a support piece.
In one embodiment, the spoiler further comprises a spoiler spring arranged in the heat exchange pipe, and the spoiler is fixedly arranged inside the spoiler spring.
In one embodiment, two ends of the spoiler are respectively fixedly connected with two ends of the spoiler spring in a one-to-one correspondence manner; or the plate edge of the spoiler is tightly contacted and fixed with the spoiler spring in the spoiler spring.
In one embodiment, a gap is formed between the plate edge of the spoiler and the wall surface of the spoiler spring, and the size of the gap between the plate edge of the spoiler and the wall surface of the spoiler spring is A; the spoiler is formed by twisting a strip-shaped plate with the width of B, the inner diameter of the spoiler spring is R, and B is not larger than R.
In one embodiment, the strip-shaped plate is divided into a first area and a second area along the length direction of the strip-shaped plate, and the first area is close to the water inlet end of the heat exchange tube relative to the second area; the length of the first region is 1/3-1/2 of the total length of the strip-shaped plate, and the length of the second region is 1/2-2/3 of the total length of the strip-shaped plate; wherein the width B value of the first region is 0.5C-0.85C.
The second technical problem is solved by the following technical solutions:
the heat exchange assembly comprises a heat exchange tube and the turbulence piece, wherein the turbulence piece is arranged in the heat exchange tube.
Compared with the background technology, the heat exchange assembly of the invention has the following beneficial effects: install the vortex spare in the heat exchange tube after, because the spoiler is used for setting up in the heat exchange tube along the axial direction of heat exchange tube, and the spoiler is the heliciform board, play better vortex effect to the rivers in the heat exchange tube, also flow along the spiral direction when the rivers in the heat exchange tube process spoiler, realize heat exchange tube pipe wall rivers and the regional rivers rapid mixing around the hollow shaft center, reduce the rivers temperature difference of pipe wall rivers temperature and the regional rivers temperature around the hollow shaft center, avoid the local temperature in the heat exchange tube to rise too fast, make the temperature everywhere in the heat exchange tube as far as possible even, the temperature difference is very little everywhere in the heat exchange tube, avoid appearing the heat exchange tube pipe wall temperature and be higher than the saturation temperature of water, thereby reach the production that reduces the. In addition, when a plurality of puncturing parts are additionally arranged on the edge of the spoiler, and S and C meet the relation that S is less than 0.25C, even if a few bubbles are formed on the tube wall of the heat exchange tube, the bubbles can be punctured when the puncturing parts contact the bubbles in water flow at the tube wall before the bubbles are not fully expanded, so that the aim of reducing the individual density of a bubble group and reducing the vaporization noise is fulfilled; when being equipped with a plurality of through-hole on the spoiler board reason, can further strengthen the vortex effect for temperature is as even as possible everywhere in the heat exchange tube, avoids appearing the heat exchange tube wall temperature and is higher than the saturation temperature of water, thereby reaches the production that reduces the bubble, eliminates the vaporization noise.
A heat exchange device comprises the heat exchange assembly.
Compared with the background technology, the heat exchange device of the invention has the following beneficial effects: install the vortex spare in the heat exchange tube after, because the spoiler is used for setting up in the heat exchange tube along the axial direction of heat exchange tube, and the spoiler is the heliciform board, play better vortex effect to the rivers in the heat exchange tube, also flow along the spiral direction when the rivers in the heat exchange tube process spoiler, realize heat exchange tube pipe wall rivers and the regional rivers rapid mixing around the hollow shaft center, reduce the rivers temperature difference of pipe wall rivers temperature and the regional rivers temperature around the hollow shaft center, avoid the local temperature in the heat exchange tube to rise too fast, make the temperature everywhere in the heat exchange tube as far as possible even, the temperature difference is very little everywhere in the heat exchange tube, avoid appearing the heat exchange tube pipe wall temperature and be higher than the saturation temperature of water, thereby reach the production that reduces the. In addition, when a plurality of puncturing parts are additionally arranged on the edge of the spoiler, even if a small amount of bubbles are formed on the pipe wall of the heat exchange pipe, the bubbles can be punctured when the puncturing parts contact the bubbles in water flow at the pipe wall before the bubbles are not fully expanded, so that the individual density of the bubble group is reduced, and the purpose of reducing vaporization noise is achieved; when being equipped with a plurality of through-hole on the spoiler board reason, can further strengthen the vortex effect for temperature is as even as possible everywhere in the heat exchange tube, avoids appearing the heat exchange tube wall temperature and is higher than the saturation temperature of water, thereby reaches the production that reduces the bubble, eliminates the vaporization noise.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an internal structure of a flow perturbation member installed in a heat exchange tube according to an embodiment of the present invention;
FIG. 2 is a schematic axial cross-sectional view of a heat exchanger with a spoiler according to an embodiment of the present invention;
FIG. 3 is a schematic view of an internal structure of a flow spoiler installed in a heat exchange tube according to another embodiment of the present invention;
FIG. 4 is a schematic axial cross-sectional view of a flow perturbation member installed in a heat exchange tube according to another embodiment of the present invention;
FIG. 5 is a schematic view of an internal structure of a flow perturbation member installed in a heat exchange tube according to another embodiment of the present invention;
FIG. 6 is a schematic structural view of the spoiler of FIG. 5;
fig. 7 is a view structural view of fig. 5 along an axial direction of the heat exchange tube;
FIG. 8 is a schematic structural view of a spoiler in accordance with still another embodiment of the present invention;
fig. 9 is a schematic structural view of a spoiler according to still another embodiment of the present invention.
Reference numerals:
10. a spoiler; 11. a piercing section; 12. a through hole; 13. a jack; l1, first region; l2, second area; l3, third area; 20. a heat exchange pipe; 30. a turbulent flow spring.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1, 2 and 5, fig. 1 shows a schematic view of an internal structure in which a flow perturbation member according to an embodiment of the present invention is installed in a heat exchange tube 20, fig. 2 shows a schematic view of an axial cross-section in which a flow perturbation member according to an embodiment of the present invention is installed in a heat exchange tube 20, and fig. 5 shows a schematic view of an internal structure in which a flow perturbation member according to another embodiment of the present invention is installed in a heat exchange tube 20. According to an embodiment of the present invention, a spoiler includes a spoiler 10. The spoiler 10 is a spiral plate, and the spoiler 10 is adapted to be disposed inside the heat exchange tube 20 along the axial direction of the heat exchange tube 20. At least one side plate edge of the spoiler 10 is provided with a plurality of puncturing parts 11 and/or a plurality of through holes 12. The size of the gap between the edge of the spoiler 10 and the wall surface of the heat exchange tube 20 is S (as shown in fig. 7), the inner diameter of the heat exchange tube 20 is C, and S and C satisfy the relationship: s < 0.25C.
After the turbulent flow piece is arranged in the heat exchange tube 20, because the turbulent flow plate 10 is arranged in the heat exchange tube 20 along the axial direction of the heat exchange tube 20, and the turbulent flow plate 10 is a spiral plate, the turbulent flow piece plays a good role in disturbing the water flow in the heat exchange tube 20, that is, the water flow in the heat exchange tube 20 flows along the spiral direction when passing through the turbulent flow plate 10, so that the water flow in the tube wall of the heat exchange tube 20 is quickly mixed with the water flow in the surrounding area of the center of the tube shaft, the temperature difference between the water flow temperature of the tube wall and the water flow temperature in the surrounding area of the center of the tube shaft is reduced, the local temperature in the heat exchange tube 20 is prevented from rising too fast, the temperature in each position in the heat exchange tube 20 is enabled to be uniform as much as possible. In addition, when a plurality of puncturing parts 11 are additionally arranged on the plate edge of the spoiler 10, and S and C meet the relation that S is less than 0.25C, even if a few bubbles are formed on the tube wall of the heat exchange tube 20, the bubbles can be punctured when the puncturing parts 11 contact the bubbles in the water flow at the tube wall before the bubbles are fully expanded, so that the individual density of the bubble group is reduced, and the purpose of reducing vaporization noise is achieved; when the edge of the spoiler 10 is provided with the plurality of through holes 12, the spoiler effect can be further enhanced, so that the temperature of each part in the heat exchange tube 20 is as uniform as possible, the temperature of the tube wall of the heat exchange tube 20 is prevented from being higher than the saturation temperature of water, the generation of bubbles is reduced, and the vaporization noise is eliminated.
Referring to fig. 5 to 7, fig. 6 shows a structural schematic view of the spoiler in fig. 5, and fig. 7 shows a view structural view of fig. 5 along an axial direction of the heat exchange pipe 20. In one embodiment, the puncturing part 11 is a serration, a protrusion, or a spike provided on the plate edge of the spoiler 10. Thus, the air bubbles in the water flow at the pipe wall can be easily punctured when the puncturing part 11 contacts with the air bubbles, and the individual density of the air bubble group is reduced, so that the vaporization noise is reduced. Of course, the piercing part 11 may have other shapes, and is not limited to the above-described serrations, projections, or spikes, as long as it can pierce the bubble when it comes into contact with the bubble.
In the infringement comparison, the "puncture part 11" may be a part of the spoiler 10, that is, the "puncture part 11" and the other part of the spoiler 10 are integrally formed; the "piercing part 11" may be made separately from the "other part of the spoiler 10" and may be combined with the "other part of the spoiler 10" as a single body. As shown in any one of fig. 5 to 7, in one embodiment, the "piercing part 11" is a part of the "spoiler 10" which is integrally formed.
Referring to fig. 5 to 7, in one embodiment, the spoiler 10 is provided with a plurality of piercing parts 11 and/or a plurality of through holes 12 on both side plate edges thereof. Thus, the piercing part 11 has a relatively high probability of contacting the bubble, so that the number of bubbles to be eliminated increases before the bubble is sufficiently expanded and broken.
Referring to fig. 1 to 4, fig. 3 is a schematic view illustrating an inner structure in which a flow perturbation member according to another embodiment of the present invention is installed in a heat exchange tube 20, and fig. 4 is a schematic view illustrating an axial cross-section in which a flow perturbation member according to another embodiment of the present invention is installed in a heat exchange tube 20. In fig. 3 and 4, compared to fig. 1 and 2, a spoiler spring 30 is additionally installed outside the spoiler 10. In addition, fig. 1 to 4 each illustrate that a plurality of through holes 12 are provided on both side plate edges of the spoiler 10. Therefore, the turbulent flow effect on the water flow in the heat exchange tube 20 is strong, so that the temperature at each position in the heat exchange tube 20 is as uniform as possible, the temperature of the tube wall of the heat exchange tube 20 is prevented from being higher than the saturation temperature of water, the generation of bubbles is reduced, and the vaporization noise is eliminated.
Further, a plurality of the piercing parts 11 and/or a plurality of the through holes 12 are sequentially arranged from one end of the spoiler 10 to the other end of the spoiler 10. Therefore, the whole plate edge from one end to the other end of the spoiler 10 is provided with the puncturing parts 11, so that the individual density of the bubble group can be better reduced, and the vaporization noise can be reduced; in addition, the whole plate edge from one end of the spoiler 10 to the other end is provided with the through hole 12, so that the spoiler effect can be further enhanced, and the temperature at each position in the heat exchange tube 20 is uniform as much as possible.
Further, the arrangement density of the penetration portions 11 on the plate edge of the spoiler 10 in the present embodiment is as dense as possible. Since the arrangement density of the puncturing parts 11 on the edge of the spoiler 10 directly affects the probability of contact with the primarily formed bubbles, the greater the arrangement density of the puncturing parts 11 on the edge of the spoiler 10, the greater the probability of contact between the puncturing parts 11 and the bubbles, and thus the greater the number of bubbles to be eliminated before the bubbles are sufficiently expanded and broken.
Also, the arrangement density of the through holes 12 on the plate edge of the spoiler 10 in the present embodiment is as dense as possible. As the arrangement density of the through holes 12 on the plate edge of the spoiler 10 is denser, the turbulent effect on the water flow inside the heat exchanging pipe 20 is stronger.
It should be noted that, a plurality of puncturing portions 11 or a plurality of through holes 12 are provided on a certain side plate edge of the spoiler 10, or a plurality of puncturing portions 11 or a plurality of through holes 12 are provided on a certain portion of a certain side plate edge of the spoiler 10, which is also within the protection scope of the present embodiment and will not be described herein.
As an alternative, when the spoiler is the spoiler 10 and the spoiler spring 30 is not disposed outside the spoiler 10, the spoiler 10 may be assembled in the heat exchange pipe 20 in the following manner: the spoiler 10 is used for clearance fit with the inner wall of the heat exchange tube 20; or, the spoiler 10 is used for being clamped and fixed on the inner wall of the heat exchange tube 20; alternatively, the spoiler 10 is suspended on the inner wall of the heat exchange tube 20, and the end of the spoiler 10 is used for being fixed on a U-shaped insertion tube (not shown in the figure) arranged at the end of the heat exchange tube 20; alternatively, the spoiler 10 is adapted to be fixedly disposed inside the heat exchange pipe 20 by means of a support. Therefore, the spoiler 10 is directly installed in the heat exchange tube 20, the spoiler spring 30 does not need to be configured in the heat exchange tube 20, and the spoiler spring 30 does not need to be sleeved outside the spoiler 10, so that the product structures of the heat exchange assembly and the heat exchange device can be simplified, and the cost is low.
It should be noted that, in order to avoid the friction damage of the inner wall of the heat exchange tube 20 caused by the spoiler 10 during the assembly process inside the heat exchange tube 20, auxiliary materials such as soft materials which can withstand a temperature of above 160 ℃ and are not decomposed are respectively disposed on the edges of the two side plates of the spoiler 10, so that the inner wall of the heat exchange tube 20 is not damaged by the friction when the spoiler 10 is installed inside the heat exchange tube 20, and after the assembly process, the auxiliary materials inside the heat exchange tube 20 are cleaned in a water washing or high-pressure gas purging manner. In addition, the outer diameter of the spoiler 10 may be at least smaller than the inner diameter of the heat exchange pipe 20 by, for example, 1cm, so that the inner wall of the heat exchange pipe 20 is not damaged by friction when the spoiler 10 is installed in the heat exchange pipe 20, and the spoiler 10 may be fixed in the heat exchange pipe 20 by using a clip, a U-shaped insert pipe, a support member, or the like after the spoiler 10 is installed in the heat exchange pipe 20.
In addition, it should be noted that the spoiler 10 may be a variable-pitch spiral plate, an equal-pitch spiral plate, a spiral plate with a constant outer diameter, or a spiral plate with a variable outer diameter, which are not limited herein and may be set according to actual requirements.
Referring to any one of fig. 3 to 4, in an embodiment, the spoiler further includes a spoiler spring 30 disposed inside the heat exchange pipe 20, and the spoiler 10 is fixedly disposed inside the spoiler spring 30. So, after the vortex spring 30 installed the heat exchange tube 20 intraductal, vortex spring 30 was located the intraductal peripheral region of heat exchange tube 20, and the intraductal rivers of heat exchange tube 20 can strengthen the disturbance of the intraductal internal face department rivers of heat exchange tube when vortex spring 30, can break the boundary layer, can reduce the thickness of boundary layer simultaneously, played the effect of reinforcing heat transfer. The turbulent spring 30 also has a good turbulent effect on the water flow at the inner wall area of the heat exchange tube 20.
In addition, the spoiler spring 30 has an outer diameter slightly smaller than an inner diameter C of the heat exchange pipe 20 (as shown in FIG. 7) so as to facilitate the insertion of the spoiler spring 30 into the heat exchange pipe 20. After the turbulent flow spring 30 is arranged in the heat exchange tube 20, the turbulent flow spring 30 can be fixed based on the fact that the heat exchange tube 20 has self processing errors along the axial direction, and the turbulent flow spring 30 is prevented from moving under the impact of water flow in the heat exchange tube 20. Of course, it should be understood that the spoiler spring 30 may also be fixedly installed in the heat exchange tube 20 by other methods, such as spot welding, bonding, clamping, fixing connection by using installation members such as screws, pins, etc., which are not limited herein.
In addition, since the spoiler 10 is fixedly disposed inside the spoiler spring 30, the spoiler 10 neither rotates relatively nor moves translationally relative to the spoiler spring 30. On one hand, the turbulent flow effect of the turbulent flow plate 10 is reduced by preventing the turbulent flow plate 10 from rotating or translating under the impact of water flow, so that the turbulent flow effect is ensured, and the noise is effectively reduced; on the other hand, when the water flow is adjusted, the water flow and the water flow speed entering the heat exchange tube 20 are changed, and the impact force on the spoiler 10 is also changed continuously, if the spoiler 10 and the spoiler spring 30 are not fixed, the spoiler 10 and the spoiler spring 30 can generate relative friction, and friction noise is generated.
Further, two ends of the spoiler 10 are respectively and fixedly connected with two ends of the spoiler spring 30 in a one-to-one correspondence manner; alternatively, the plate edge of the spoiler 10 is fixed in close contact with the spoiler spring 30 inside the spoiler spring 30. Thus, the two ends of the spoiler 10 are respectively and fixedly connected with the two ends of the spoiler spring 30 in a one-to-one correspondence. On one hand, the spoiler spring 30 can be conveniently sleeved outside the spoiler 10; on the other hand, after the spoiler spring 30 is sleeved outside the spoiler 10, the two ends of the spoiler 10 are respectively and fixedly connected with the two ends of the spoiler spring 30, and the assembling operation is convenient and fast.
In addition, referring to fig. 7 to 9, fig. 8 illustrates a structural schematic view of a spoiler according to still another embodiment of the present invention, and fig. 9 illustrates a structural schematic view of a spoiler according to still another embodiment of the present invention. Let the pitch of the spoiler 10 be P, the diameter of the position where the pitch of the spoiler 10 is located be D (for example, in fig. 8 or 9, the diameter of the position where the pitch P1 is located is D1), and the inner diameter of the spoiler spring 30 be R. In order to achieve that the plate edge of the spoiler 10 is fixed in close contact with the spoiler spring 30 within the spoiler spring 30, D is optionally substantially the same as R, or D is slightly larger than R. Thus, when the spoiler 10 is installed inside the spoiler spring 30, the two side plate edges of the spoiler 10 are tightly abutted against the inner wall of the spoiler spring 30, and are stably and tightly engaged with the spoiler spring 30.
As one example, the spoiler spring 30 includes a first-stage spring, a middle-stage spring, and a last-stage spring, which are connected in sequence. The first section spring and the tail section spring are respectively sleeved at the head end and the tail end of the spoiler 10 correspondingly and are used for supporting the spoiler 10 in an abutting mode. The outer diameters of the first section spring and the tail section spring are smaller than that of the middle section spring. The middle section spring is sleeved outside the spoiler 10 and used for abutting against the inner wall of the heat exchange tube 20 or providing a gap. Thus, since the middle section spring is abutted against the inner wall of the heat exchange tube 20 or a gap is formed between the middle section spring and the inner wall of the heat exchange tube 20, the head end and the tail end of the spoiler 10 are respectively and correspondingly arranged on the first section spring and the tail section spring, and the first section spring and the tail section spring respectively play a role in supporting and positioning the head end and the tail end of the spoiler 10, so that the spoiler 10 can be fixedly arranged in the heat exchange tube 20.
Specifically, in order to realize that the first-stage spring plays a better supporting and positioning role for the head end of the spoiler 10, for example, a groove is formed on the outer wall of the head end of the spoiler 10, so that the first-stage spring is positioned and clamped in the groove. Similarly, in order to achieve a better supporting and positioning effect of the tail section spring on the tail end of the spoiler 10, for example, a groove is provided on an outer wall of the tail end of the spoiler 10, so that the tail section spring is positioned and clamped in the groove. Furthermore, in order to ensure the installation stability of the first section of spring on the groove and ensure the turbulent flow effect of the middle section of spring on the peripheral area in the heat exchange tube 20, the pitch density of the first section of spring is greater than that of the middle section of spring. Likewise, the pitch density of the tail section springs is greater than the pitch density of the mid section springs. As another example, there is no need to wind a groove on the outer wall of the head end of the spoiler 10 or wind a groove on the outer wall of the tail end, but for example, the first section of spring is made into a cone shape, and the first section of spring is tightly sleeved and fixed on the head end of the spoiler 10. Similarly, for example, the tail section spring is made into a cone shape, and the tail section spring is tightly sleeved and fixed on the tail end of the spoiler 10.
As yet another example, the spoiler spring 30 includes a first-stage spring, a middle-stage spring, and a last-stage spring connected in sequence. The first section spring and the tail section spring are used for abutting against the inner wall of the heat exchange tube 20 or are provided with gaps. The external diameter of first section spring and back end spring all is greater than the external diameter of middle part section spring, and middle part section spring housing is located the spoiler 10 outside and is used for contradicting and support spoiler 10. So, because first section spring, tail-end spring all contradict or are equipped with the clearance with the inner wall of heat exchange tube 20, middle part section spring housing is located outside spoiler 10 and is used for contradicting and support spoiler 10, so just can realize that spoiler 10 installs in the intraductal middle part region of heat exchange tube 20. In addition, because the middle section spring is not contacted with the inner wall of the heat exchange tube 20, only the first section spring and the tail section spring are contacted with the inner wall of the heat exchange tube 20, thereby being beneficial to reducing the pressure of the water inlet of the heat exchange tube 20.
It should be noted that, the lengths of the first section spring, the middle section spring and the tail section spring are not limited herein, and may be set according to actual situations. Specifically, the length of the middle section spring is greater than the length of the first section spring and the length of the tail section spring. In addition, the proportional relationship between the length of the middle spring and the length of the first spring is, for example, 3: 1-10:1. Thus, the pressure at the inlet of the heat exchange pipe 20 can be advantageously reduced.
Referring to any one of fig. 3 to 6, as a possible solution, the end of the spoiler 10 is provided with an insertion hole 13, and the insertion hole 13 may be, for example, a circular hole, an elliptical hole, and the like, but is not limited thereto, and the end of the spoiler spring 30 is inserted into the insertion hole 13 to be connected to the spoiler 10, so that the spoiler 10 is mounted and fixed to the spoiler spring 30. Of course, the spoiler 10 may be fixedly mounted on the spoiler spring 30 by other methods, such as spot welding, bonding, clipping, fixing connection by using mounting members such as screws and pins, etc., which are not limited herein.
In one embodiment, the spoiler 10 is mounted on the spoiler spring 30, and the spoiler 10 is fixed by the spoiler spring 30. In addition, the two U-shaped insertion tubes connected to the two ends of the heat exchange tube 20 are respectively abutted against and fixed to the two ends of the spoiler spring 30, so that the spoiler spring 30 can be fixedly installed in the heat exchange tube 20. It can be seen that, set up spoiler 10 at the intraductal middle part of heat exchange tube 20 regional and along axial direction, spoiler 10 is fixed in on spoiler spring 30, installs in the intraductal middle part region of heat exchange tube 20 through spoiler spring 30 is fixed, need not mould punching press or welded fastening, and the equipment is more convenient, can reduce cost.
Referring to fig. 7 to 9, in one embodiment, a gap is formed between the plate edge of the spoiler 10 and the wall surface of the spoiler spring 30, and the gap between the plate edge of the spoiler 10 and the wall surface of the spoiler spring 30 is a. The spoiler 10 is formed by twisting a strip-shaped plate with a width of B, the inner diameter of the spoiler spring 30 is R, and B is not larger than R.
Further, the strip is divided into a first region L1 and a second region L2 along the length direction of the strip, and the first region L1 is close to the water inlet end of the heat exchange tube 20 with respect to the second region L2. The length of the first region L1 is 1/3 to 1/2 of the total length of the strip, and the length of the second region L2 is 1/2 to 2/3 of the total length of the strip. Wherein the width B of the first region L1 has a value of 0.5C-0.85C. So, can effective control low-temperature water in the proportion of taking up of whole heat exchange tube 20, be favorable to reducing the rivers difference in temperature of heat exchange tube 20 middle part to the play water end of heat exchange tube 20, when rivers difference in temperature scope is narrower, be unfavorable for the formation of bubble more, be favorable to reducing the gasification noise more. The value of the width B of the second region L2 may be controlled to be, for example, not less than 0.5C.
In addition, it should be noted that, through simulation test verification, when the B value increases, the a value correspondingly decreases, at this time, the flow noise increases, and the flow resistance also increases, but the turbulent flow effect is relatively good, and the vaporization noise is relatively low. In addition, no matter whether the A value and the B value are fixed or changed, the turbulent flow effect can be achieved, and the vaporization noise can be improved. In addition, the adjustment of the value A and the value B can affect the water flow resistance and further affect the water outlet flow. Secondly, when the value a is 0, the value a reaches the limit, that is, there is no gap between the value a and the wall surface of the spoiler spring 30, and the spoiler 10 is tightly clamped with the spoiler spring 30 in an interference fit manner when being installed in the spoiler spring 30, so that the end portion of the spoiler spring 30 does not need to be clamped and fixed on the spoiler 10, and in actual production, the production efficiency can be effectively improved.
It can be understood that the strip-shaped plate may be a rectangular plate with a constant width B, and thus the gap a between each edge of the spoiler 10 and the wall surface of the spoiler spring 30, which is obtained by twisting and bending the rectangular plate, is the same. Of course, the strip-shaped plate may also be a plate whose width B changes along the length direction thereof, so that the gap a between each edge of the spoiler 10 and the wall surface of the spoiler spring 30, which is obtained by twisting and bending the strip-shaped plate, is different from the gap a between the edge and the wall surface of the spoiler spring 30.
As one example, specifically for example, the strip plate is divided into a first region L1 and a second region L2 along the length direction of the strip plate, and the first region L1 is close to the water inlet end of the heat exchange tube 20 with respect to the second region L2. The length of the first region L1 is, for example, 1/4 or 1/3 of the total length of the strip, and the length of the second region L2 is, for example, 3/4 or 2/3 of the total length of the strip. The width B of the first region L1 is kept constant, and the width B of the second region L2 is gradually decreased, so that after the spoiler 10 is obtained by twisting and bending the strip-shaped plate, the gap a between the edge of the first region L1 and the wall surface of the spoiler spring 30 is kept the same, and the gap a between the edge of the second region L2 and the wall surface of the spoiler spring 30 is gradually increased. Therefore, the initial speed of the water flow at the water inlet end of the heat exchange tube 20 is high, the water flow needs to be decelerated, a good deceleration effect is achieved through the first area L1 of the spoiler 10, the water flow can be greatly heated at the water inlet end of the heat exchange tube 20, namely, the water flow speed is controlled, and the water temperature is raised to a certain temperature; then, the water flow can rapidly pass through the middle section and the water outlet end of the heat exchange tube 20, namely, the second area L2 corresponding to the spoiler 10, so that the generation of more bubbles due to excessive temperature difference can be avoided, namely, the vaporization noise is avoided, and meanwhile, the heat exchange efficiency can be improved because the water flow rapidly passes through.
As another example, for example, the strip-shaped plate is divided into a first region L1, a second region L2 and a third region L3 along the length direction of the strip-shaped plate, and the first region L1 is adjacent to the water inlet end of the heat exchange tube 20 with respect to the second region L2. The length of the first region L1 is, for example, 1/3 of the total length of the strip, the length of the second region L2 is, for example, 1/3 of the total length of the strip, and the length of the third region L3 is, for example, 1/3 of the total length of the strip; alternatively, the length of the first region L1 is, for example, 1/4 of the total length of the strip, the length of the second region L2 is, for example, 1/2 of the total length of the strip, and the length of the third region L3 is, for example, 1/4 of the total length of the strip. The width B value of the first region L1 is kept unchanged, the width B value of the second region L2 is gradually reduced and then gradually increased, and the width B value of the third region L3 is kept unchanged, so that after the spoiler 10 is obtained by twisting and bending the strip-shaped plate, the plate edge part of the first region L1 is kept the same as the gap A value of the wall surface of the spoiler spring 30, the plate edge part of the second region L2 is increased and then reduced as the gap A value of the wall surface of the spoiler spring 30, and the plate edge part of the third region L3 is kept the same as the gap A value of the wall surface of the spoiler spring 30. Therefore, the initial speed of the water flow at the water inlet end of the heat exchange tube 20 is relatively high, the water flow needs to be decelerated, a good deceleration effect is achieved through the first area L1 of the spoiler 10, and the effect of greatly increasing the temperature of the water flow at the water inlet end of the heat exchange tube 20 can be achieved; the middle pipe section of the heat exchange pipe 20 is a main heating position, so that the water flow resistance is required to be reduced, the water flow speed is increased, the heat exchange efficiency is improved, the water temperature difference is small, the water temperature is always uniform, bubbles are not generated favorably, and the vaporization noise can be reduced; the water flow resistance at the water outlet end of the heat exchange tube 20 is increased, the water flow speed needs to be reduced, the purpose of forced heat exchange is achieved, and the water flow at the water outlet end of the heat exchange tube 20 is not influenced by the water flow inertia and can uniformly flow out. Simulation shows that the lengths of the low-temperature water region (corresponding to the first region L1) and the high-temperature water region (corresponding to the third region L3) in the heat exchange tube 20 are both very short, the temperature difference of the water in the middle tube section of the heat exchange tube 20 is small, the water temperature is always uniform, and the generation of bubbles is not facilitated.
Referring to fig. 7 to 9, further, the inner diameter of the heat exchange pipe 20 is defined as C, and in the case where the spoiler spring 30 is used in combination with the spoiler 10, 50% < B/C < 82%, and the ratio of P to D is defined as λ. When the width B value of the strip-shaped plate twisted to form the spoiler 10 is kept unchanged along the length direction of the strip-shaped plate, lambda is controlled to be 0.8< lambda <2.9 for the same spoiler 10 arranged in the heat exchange tube 20, and simulation tests prove that vaporization noise can be effectively reduced; when the width B value of the strip-shaped plate twisted to form the spoiler 10 changes along the length direction of the strip-shaped plate, 0.5< lambda <4.3, and simulation tests prove that the vaporization noise can be effectively reduced.
Referring to any one of fig. 1 to 6, in an embodiment, a heat exchange assembly includes a heat exchange tube 20 and a spoiler disposed inside the heat exchange tube 20.
Compared with the background art, the heat exchange assembly has the following beneficial effects: after the spoiler is installed in the heat exchange tube 20, the spoiler 10 is arranged in the heat exchange tube 20 along the axial direction of the heat exchange tube 20, and the spoiler 10 is a spiral plate, so as to play a good role in disturbing water flow in the heat exchange tube 20, that is, water flow in the heat exchange tube 20 flows along the spiral direction when passing through the spoiler 10, thereby realizing rapid mixing of water flow in the tube wall of the heat exchange tube 20 and water flow in the surrounding area of the center of the tube shaft, reducing the temperature difference between the water flow temperature in the tube wall and the water flow temperature in the surrounding area of the center of the tube shaft, avoiding that the local temperature in the heat exchange tube 20 rises too fast, enabling the temperature in each part in the heat exchange tube 20 to be as uniform as possible, having small temperature difference in each part in the heat exchange tube 20, avoiding that the. In addition, when a plurality of puncturing parts 11 are additionally arranged on the plate edge of the spoiler 10, and S and C meet the relation that S is less than 0.25C, even if a few bubbles are formed on the tube wall of the heat exchange tube 20, the bubbles can be punctured when the puncturing parts 11 contact the bubbles in the water flow at the tube wall before the bubbles are fully expanded, so that the individual density of the bubble group is reduced, and the purpose of reducing vaporization noise is achieved; when the edge of the spoiler 10 is provided with the plurality of through holes 12, the spoiler effect can be further enhanced, so that the temperature of each part in the heat exchange tube 20 is as uniform as possible, the temperature of the tube wall of the heat exchange tube 20 is prevented from being higher than the saturation temperature of water, the generation of bubbles is reduced, and the vaporization noise is eliminated.
Further, the inner wall of the heat exchange pipe 20 is provided with threads. The heat exchange tube 20 with threads is adopted, so that the turbulent flow effect can be improved. It should be understood that the specific material of the heat exchange tube 20 is not limited in this embodiment, for example, the heat exchange tube 20 may also be a common copper tube, a stainless steel tube, an iron tube, or the like. Of course, it is also possible to have a non-threaded design of the inner wall of the heat exchange tube 20, i.e., a smooth wall.
Referring to any one of fig. 1 to 6, in an embodiment, a heat exchange device includes the heat exchange assembly according to any one of the above embodiments. The heat exchange device may be a heat exchanger or a gas water heater, for example.
Compared with the background technology, the heat exchange device of the invention has the following beneficial effects: after the spoiler is installed in the heat exchange tube 20, the spoiler 10 is arranged in the heat exchange tube 20 along the axial direction of the heat exchange tube 20, and the spoiler 10 is a spiral plate, so as to play a good role in disturbing water flow in the heat exchange tube 20, that is, water flow in the heat exchange tube 20 flows along the spiral direction when passing through the spoiler 10, thereby realizing rapid mixing of water flow in the tube wall of the heat exchange tube 20 and water flow in the surrounding area of the center of the tube shaft, reducing the temperature difference between the water flow temperature in the tube wall and the water flow temperature in the surrounding area of the center of the tube shaft, avoiding that the local temperature in the heat exchange tube 20 rises too fast, enabling the temperature in each part in the heat exchange tube 20 to be as uniform as possible, having small temperature difference in each part in the heat exchange tube 20, avoiding that the. In addition, when a plurality of puncturing parts 11 are additionally arranged on the plate edge of the spoiler 10, even if a small amount of bubbles are formed on the tube wall of the heat exchange tube 20, before the bubbles are not fully expanded, the puncturing parts 11 can puncture the bubbles when contacting the bubbles in water flow at the tube wall, so that the individual density of the bubble group is reduced, and the purpose of reducing vaporization noise is achieved; when the edge of the spoiler 10 is provided with the plurality of through holes 12, the spoiler effect can be further enhanced, so that the temperature of each part in the heat exchange tube 20 is as uniform as possible, the temperature of the tube wall of the heat exchange tube 20 is prevented from being higher than the saturation temperature of water, the generation of bubbles is reduced, and the vaporization noise is eliminated.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (10)
1. A spoiler, comprising:
the heat exchanger comprises a spoiler (10), wherein the spoiler (10) is a spiral plate, and the spoiler (10) is arranged in a heat exchange tube (20) along the axial direction of the heat exchange tube (20); a plurality of puncture parts (11) and/or a plurality of through holes (12) are/is arranged on the edge of at least one side plate of the spoiler (10); the gap between the plate edge of the spoiler (10) and the wall surface of the heat exchange tube (20) is S, the inner diameter of the heat exchange tube (20) is C, and the S and C satisfy the following relation: s < 0.25C.
2. Spoiler according to claim 1, characterized in that the piercing part (11) is a serration, a protrusion or a spike provided on the plate edge of the spoiler (10).
3. Spoiler according to claim 1, characterized in that several piercing parts (11) and/or several through holes (12) are arranged in sequence from one end of the spoiler (10) to the other end of the spoiler (10).
4. A spoiler in accordance with claim 1, wherein said spoiler (10) is adapted to be clearance fitted with an inner wall of said heat exchanging pipe (20); or the spoiler (10) is used for being clamped and fixed on the inner wall of the heat exchange tube (20); or the spoiler (10) is arranged on the inner wall of the heat exchange tube (20) in a hanging manner, and the end part of the spoiler (10) is fixedly arranged on the U-shaped insertion tube at the end part of the heat exchange tube (20); or the spoiler (10) is fixedly arranged in the heat exchange tube (20) through a support piece.
5. The spoiler according to claim 1, further comprising a spoiler spring (30) for being disposed inside the heat exchange tube (20), wherein the spoiler (10) is fixedly disposed inside the spoiler spring (30).
6. The spoiler according to claim 5, wherein both ends of the spoiler (10) are fixedly connected to both ends of the spoiler spring (30) in a one-to-one correspondence; or the plate edge of the spoiler (10) is tightly contacted and fixed with the spoiler spring (30) in the spoiler spring (30).
7. The spoiler according to claim 5, wherein a gap is provided between the plate edge of the spoiler (10) and the wall surface of the spoiler spring (30), and the gap between the plate edge of the spoiler (10) and the wall surface of the spoiler spring (30) has a size of A; the spoiler (10) is formed by twisting a strip-shaped plate with the width of B, the inner diameter of the spoiler spring (30) is R, and B is not larger than R.
8. A spoiler according to claim 7, wherein the strip is divided into a first region (L1) and a second region (L2) along a length direction of the strip, the first region (L1) being adjacent to a water inlet end of the heat exchange tube (20) with respect to the second region (L2); the length of the first region (L1) is 1/3 to 1/2 of the total length of the strip-shaped plate, and the length of the second region (L2) is 1/2 to 2/3 of the total length of the strip-shaped plate; wherein the width B of the first region (L1) has a value of 0.5C-0.85C.
9. A heat exchange assembly, characterized in that the heat exchange assembly comprises a heat exchange tube (20) and a flow perturbation member according to any one of claims 1 to 8, the flow perturbation member being arranged inside the heat exchange tube (20).
10. A heat exchange device comprising the heat exchange assembly of claim 9.
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| CN202110180574.1A CN112923777A (en) | 2021-02-08 | 2021-02-08 | Turbulent flow piece, heat exchange assembly and heat exchange device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114100539A (en) * | 2021-11-02 | 2022-03-01 | 中国石化工程建设有限公司 | Intraductal enhanced heat transfer plug-in components and pyrolysis furnace |
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